Robert Carey Sumner (1729–1771) was Master of Harrow School in England.
Born on 9 March 1728–9 at Windsor, he was grandson of a Bristol merchant and nephew of John Sumner the headmaster of Eton College.
In 1768 he obtained the degree of D.D., and, dying on 12 September 1771, he was buried in Harrow church.
[2] Sumner published Concio ad Clerum (London, 1768), which Samuel Parr praised for its Latinity.
[1] On 3 August 1760 Sumner married the sister of William Arden, a scholar of King's College.